From f295d3df7880f37eb7a7cd0fc18c2827e40420e6 Mon Sep 17 00:00:00 2001
From: Bernard Xiong <bernard.xiong@gmail.com>
Date: Mon, 27 Feb 2023 10:04:10 +0800
Subject: [PATCH] [libcpu.aarch64] add rt_backtrace function. (#6982)

* [libcpu.aarch64] add rt_backtrace function.
---
 libcpu/aarch64/common/backtrace.c | 11 +++++++++++
 libcpu/aarch64/common/backtrace.h |  1 +
 2 files changed, 12 insertions(+)

diff --git a/libcpu/aarch64/common/backtrace.c b/libcpu/aarch64/common/backtrace.c
index c3e3803f93..d8985d0c09 100644
--- a/libcpu/aarch64/common/backtrace.c
+++ b/libcpu/aarch64/common/backtrace.c
@@ -55,3 +55,14 @@ void backtrace(unsigned long pc, unsigned long lr, unsigned long fp)
     walk_unwind(lr, fp);
     rt_kprintf("\n");
 }
+
+int rt_backtrace(void)
+{
+    unsigned long pc = (unsigned long)backtrace;
+    unsigned long ra = (unsigned long)__builtin_return_address(0U);
+    unsigned long fr = (unsigned long)__builtin_frame_address(0U);
+
+    backtrace(pc, ra, fr);
+    return 0;
+}
+MSH_CMD_EXPORT_ALIAS(rt_backtrace, bt_test, backtrace test);
diff --git a/libcpu/aarch64/common/backtrace.h b/libcpu/aarch64/common/backtrace.h
index b34601da58..8c8006690c 100644
--- a/libcpu/aarch64/common/backtrace.h
+++ b/libcpu/aarch64/common/backtrace.h
@@ -18,5 +18,6 @@ struct bt_frame
 };
 
 void backtrace(unsigned long pc, unsigned long lr, unsigned long fp);
+int rt_backtrace(void);
 
 #endif  /*__BACKTRACE_H__*/
-- 
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